{
  "$type": "site.standard.document",
  "description": "A power transmitter () for wirelessly providing power to a power receiver () comprises a retriever () retrieving calibration data comprising a set of calibration parameters for each of a plurality of spatial positions of a calibration receiver relative to a calibration transmitter. A test generator…",
  "path": "/patents/1298672",
  "publishedAt": "2021-08-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/90",
    "KONINKLIJKE PHILIPS N.V."
  ],
  "textContent": "A power transmitter () for wirelessly providing power to a power receiver () comprises a retriever () retrieving calibration data comprising a set of calibration parameters for each of a plurality of spatial positions of a calibration receiver relative to a calibration transmitter. A test generator () generates a test drive signal for a transmitter coil () to generate an electromagnetic test signal, and a test processor () determines a set of test parameters in response to the test drive signal. A position estimator () estimates a position of the power receiver relative to the power transmitter in response to a comparison of the test parameters to the calibration parameters for the plurality of spatial positions. The parameters include a power loss measure, a resonance frequency measure, and a coupling measure. The approach and specific parameters provide a substantially improved position estimation.",
  "title": "POWER TRANSMITTER AND METHOD OF OPERATION THEREFOR"
}